Composition for dentist&#39;s tapers.



Patented. July 7,1903.

TUFFICEQ ATENT LEO C. MANDEL, OF ST. LOUIS, MISSOURI.

COMPOSITION FOR DENTISTS TAPERS.

SPECIFICATION forming part of Letters Patent N 0. 733,061, dated July'7, 1903. Application filed March 18, 1903. Serial No. 148.390. (NoSpecimens.)

To all whom, it may concern:

Be it known that I, LEO O. MANDEL, a citi- Zen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Compositions for the Manufacture ofDentists Tapers, of which the following is a specification.

This invention provides a novel composition which when burned gives offfree carbon in the shape of dense smoke, being admirably adapted forblackening the dies and counterdies used in mechanical dentistry.

In making the composition the following ingredients are compounded inabout the pro portions specified-1 6., evaporated turpentine, fourpounds; sweet-oil, eight ounces; gum-dammar, one ounce.

The evaporated turpentine is prepared by boiling oil of turpentine untilquite viseid. Then add the sweet-oil, which stir in thoroughly, afterwhich the gum-d ammar is added and the whole stirred to insure athorough admixing of the constituents. WVhile the mixture is still hotand in a liquid state cords or fibrous strands are immersed therein andwhen saturated are hung up to harden, when they are ready for use bybeing lighted.

Having thus described the invention, what is claimed as new is 1. Acomposition for the purpose specified, consisting of evaporatedturpentine, sweetoil and guin-dammar, in about the proportionsspecified.

2. A taper for dentists use consisting of a cord saturated with acomposition consisting of evaporated turpentine, sweet-oil andgumdammar, substantiallyas set forth. 7

In testimony whereof I affiX my signature in presence of two witnesses.

LEO C. MANDEL.

